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Need Help On Sc400

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whats up guys

just bought my 93 sc400 a month ago,

recently I have been experiencing slight chokes

or hestation at around 20mph becoming more obviouse

and obviouse. Last week freaked out when I saw

my CAT smoking hot after a 2 hours driving at constant 80s

Does anyone else also have this problem?

what might have caused this? coil? sensers?

I like to start by checking out the plugsmyself

but have no knowledge of the car..

How do I get to it,

and if I need to change it, what is recommended? :geek:

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Your cat could have gone bad (clogged).  That, or an O2 sensor has gone bad.

Thanks Dom, How can I find out if the o2 sensers are bad?

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